<?php
if(isset($_FILES['image'])){
	$errors= array();
	$file_name = $_FILES['image']['name'];
	$file_size =$_FILES['image']['size'];
	$file_tmp =$_FILES['image']['tmp_name'];
	$file_type=$_FILES['image']['type'];
	$file_ext=strtolower(end(explode('.',$_FILES['image']['name'])));

	$expensions= array("jpeg","jpg","png","php", "html",  "htm");
	if(in_array($file_ext,$expensions)=== false){
		$errors[]="extension not allowed, please choose a JPEG or PNG file.";
	}
	if($file_size > 2097152){
	$errors[]='File size must be excately 2 MB';
	}
	if(empty($errors)==true){
		move_uploaded_file($file_tmp, $file_name);
		echo "Success";
	}else{
		print_r($errors);
	}
}
?>

<form action="" method="POST" enctype="multipart/form-data">
<input type="file" name="image" />
<input type="submit"/>
</form>